In today's world, match-fixing occurs when a match is played on a fully or partially predetermined result, which can be explained as a violation of the rules of the game and often a violation of the law. The most common reason is to get paid by gamblers, but teams can also intentionally perform poorly to gain a future advantage, the player can also play poorly to use a handicap system and set up a match. Correcting a match, when motivated by gambling, requires contacts (and normally money transfers) between gamblers, players, team officials and / or referees. These contacts and transfers sometimes end badly and lead to prosecution under the law or the sports league. That is why here with us, we have those hidden sources, with which no mistake can be made. In contrast, losing for a future advantage is internal to the team and very difficult to prove. Often, substitutions are made by the coach in order to intentionally increase the team's chances of losing. Match fixing generally refers to fixing the final score of the game. That is, before the start of the same game we have the information how it will end. Another form of match-fixing, known as match-fixing, involves fixing small events within a match for which more people can gamble, but which are unlikely to be crucial in determining the final outcome of the game. Because they do not play a big role in setting it up. When it comes to fixing-match, we can mention a few main roles or things that lead to a fixed matches. These are the main reasons for fixing today's matches :Agreements with gamblers, Better playoff chances, Better draft position , More favorable schedule next year , Match fixing by referees, Match fixing to a draw or a fixed score , Increased gate receipts , Abuse of tie-breaking rules , Prize sharing , Individual performance in team sports.